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Finding the Fourth Proportional to 768,357.84, 1,060,472.58 and 458,280.28

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Solution

The fourth proportional to 768,357.84, 1,060,472.58 and 458,280.28 is: 632,509.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,357.84 : 1,060,472.58 = 458,280.28 : x
  2. Step 2: Convert to fraction form
    768,357.84/1,060,472.58 = 458,280.28/x
  3. Step 3: Cross multiply
    768,357.84x = 1,060,472.58 × 458,280.28
  4. Step 4: Simplify right side
    768,357.84x = 485,993,670,894.72
  5. Step 5: Solve for x
    x = 485,993,670,894.72/768,357.84
  6. Step 6: Final answer
    x = 632,509.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.